Asymptomatic Anisakiasis of the Colon Diagnosed and Treated by Colonoscopy

• 作者: Akie Sano Atsunori Kodama Kenji Niwa Kohjiro Niwa Kuninori Hatasa Masao Kagami Motoki Takenaka Takuji Tanaka Tomoshi Takeda Yasunari Matsuno
• 来源期刊: 临床医学病理报告(英文)
• 学科: 医学
• 关键词: ASYMPTOMATIC ANISAKIASIS Ascending Colon COLONOSCOPY Risk Factor for Cancer
• 年，卷（期）: 2020,（9）
• 页码范围: 288-294
• 页数: 7页
• 分类号: R53

摘要

Anisakiasis can involve any part of the digestive tract, but most cases reported have involved the stomach;few reports have described colonic anisakiasis. Furthermore, asymptomatic colonic anisakiasis has been reported to be very rare. A 58-year-old Japanese male asymptomatically received colonoscopy due to a fecal occult blood testing positive, and an <em>Anisakis</em> larva was removed in the ascending colon. After colonoscopy, an detailed questionings concerning eating raw fish revealed that the patient ate the liver of raw filefish 21 days before the colonoscopy. Thus, questionings concerning eating the raw fish were very important and helpful for correct diagnosis. This case report demonstrated that colonic anisakiasis can be diagnosed by colonoscopy before severe complications (intestinal obstruction, perforation, and cancer development) occur. Also, biopsy forceps could be used to remove the <em>Anisakis</em> worms, demonstrating that diagnosis and treatment can be simultaneously performed.